body {
    margin: 0;
}

.centerDiv {
    width: 210px;
    margin: auto;
}

.container {
    position: relative;
    width: 200px;
    height: 410px;
    margin: auto;
    border: 5px solid;
    border-image: linear-gradient(#45224a, #bed742, #2a5caa, #45224a) 10;
    overflow: visible;
}

.buttonGroup {
    margin-left: 85px;
}

button {
    width: 30px;
    height: 30px;
}

button.leftBtn {
    margin: 10px 60px 10px -50px;
}

.dot {
    position: absolute;
    display: inline-block;
    width: 10px;
    height: 10px;
}